CHOLF

China Oilfield Services Limited, together with its subsidiaries, provides integrated offshore oilfield services in Mainland China and internationally. The company operates through four segments: Drilling Services, Well Services, Marine Support Services, and Geophysical Acquisition and Surveying Services. The Drilling Services segment provides jack-up drilling rig, semi-submersible drilling rig, modular rig, and land drilling rig services; and casting and tubing, and running pipe inspection and repair services.